diff --git a/oss-fuzz/mruby.dict b/oss-fuzz/config/mruby.dict
similarity index 100%
rename from oss-fuzz/mruby.dict
rename to oss-fuzz/config/mruby.dict
diff --git a/oss-fuzz/config/mruby_fuzzer.options b/oss-fuzz/config/mruby_fuzzer.options
new file mode 100644
index 000000000..5d1c8d2da
--- /dev/null
+++ b/oss-fuzz/config/mruby_fuzzer.options
@@ -0,0 +1,3 @@
+[libfuzzer]
+close_fd_mask=3
+dict=mruby.dict